Sharpening device for edged tools



Dec. 5, 1933.

N. K. FOUGNER SHARPENING DEVICE FOR EDGED TOOLS Filed April 15, 1930 2 Sheets-Sheet 1 Illlllllll'lllllllllllllll'lllllllllllll WITNESSES 64K 9/ 5, 1933. N. K. FOUGNER SHARPENING DEVICE FOR EDGED TOOLS Filed April 15, 1930 2 Sheets-Sheet 2 INVENTOR IIIIIIIIIIIIIIIIIIIIIIII ATTORN EY .m 4 /4 k U Q KG $1.

WITNESSES Patented Dec. 5, 1933 UNITED STATES PATENT OFFICE 14 Claims.

This invention relates enerally to a portable sharpening device for edged tools or implements, and the device, although not necessarily restricted to such use, is more particularly adapted for sharpening razor blades, either of the old fashioned type or of the single or double edged safety types.

Devices of this general class and for this purpose which have been previously devised and which have been placed on the market or actually used, are open to certain objections and possess certain deficiencies, which it is the aim of the present invention to overcome. One of the most notable objections or deficiencies which has been observed is the failure of practically all of such de ices to provide a means for properly grinding or honing the blade? edge, in addition to means for properly stropping the same.

Tie present invention broadly comprehends a portable blade sharpening device by virtue of which a razor blade or other edged tool or implement may be properly ground or honed and properly stropped without removing theblade 1n the device or handling the blade after its initial insertion therein.

It is a Well established fact that in properly grinding or honing a blade, the effect of a, diagonal stroke over the grinding or honing surface with the cutting edge in the lead must be obtained, While in stropping, the effect of a diagonal stroke must be adhered to, but the cutedge must constitute the following edge, and it therefore, a further object of the present invention to accomplish these operations in a manner which conforms with these well established facts and principles.

rhe invention further resides in the provision of an improved portable sharpening device f e blades of edged tools or implements, in .ch the relative movements between the blade 1g surfaces are accomplished udinal reciprocation of a blade holder or a member which supports the blade.

More specifically, the invention contemplates in a portable sharpening device for edged tools implements, the employment of a pair of pening rollers journaled for rotation on spaced parallel axes, together with a blade holder mounted for, longitudinal reciprocation between said rollers coincident with the rotation of the rollers either in a direction toward or away from th edge to be sharpened, depending upon whether the sharpening rollers are for honing or stropping the edge.

The invention more particularly aims to provide in a sharpening device of the character set forth, a plurality of pairs of sharpeningrollers which are journaled for rotation on spacedparallel axes, together with a blade holder mounted for longitudinal reciprocation between and relative to said rollers coincident with the rotation of the rollers, and further including means operable by reciprocations of the blade holder, for imparting rotation to the sharpening rollers, and which device still further embodies manually shiftable means for coupling the blade holder with the roller turning means at longitudinally spaced points to selectively dispose the blade holder and blade in juxtaposition to the several pairs of rollers for cooperation therewith. s

The invention further embraces in a device of the character set forth which includes or comprises a pair of sharpening rollers journaled for rotation on spaced parallel axes, together with a blade holder mounted for longtudinal reciprcation between and relative to said rollers coincident with the rotation of the rollers and means for imparting rotation to said rollers by virtue of reciprocations ofthe blade holder, in which means is provided operable upon the initial movement of the blade holder upon each 0 change of direction of the same to swing the blade holder and blade to alternately dispose the opposite faces of the cutting edge in contact with the sharpening rollers.

As a further feature, the invention includes in a sharpening device of the character set forth having a pair of grinding or honing rollers and a pair of stropping rollers within a casing, with the rollers of each pair journaled for rotation on spaced parallel axes and'having a blade holder mounted for longitudinal reciprocation between and relative to said rollers coincident with the rotation of said rollers, means operable by the reciprooatory movement of the blade holder for imparting rotary motion to the sharpening rollers and means 'further operable by the longitudinal movement of the blade holder' for disposing the blade edge injuxtaposition with the periphery of the grinding rollers to cause said grinding rollers to turn toward the "edge of the blade to be sharpened, while functioning to cause the blade edge to be'disposed relative to the stropping rollers wherein said stropping rollers will turn away from the cutting edges during the stropping operation.

The invention further embodies in a device of the character set forth, frictional braking means for retarding the rotation of the rollers in order to insure a proper sharpening contact or the blade edges with the sharpening roller peripheries and at the same time to make certain of the proper functioning of the rocking of the blade holder to perform its function or" presenting the opposite faces of the cutting edge to the sharpening rollers.

The invention aims as a still further object to provide an effectual sharpening device which is comparatively simple and compact in its construction, inexpensive to manufacture, which is easy to operate and which is highly efiicient in its purpose.

With the above recited and other objects in view, reference is had to the following description and accompanying drawings, in which there is exhibited one example or embodiment of the invention, while the claims define the actual scope of the same.

In the drawings:

Figure 1 is a perspective view of a blade sharpening device constructed in accordance with the invention.

Figure 2 is a top plan view illustrating the position of parts when the blade is to be in-- serted or removed.

Figure 3 is a similar view illustrating in full linesthe initial inward movement of the blade holder and the starting of. the grinding or honing operation, and further illustrating in dot and dash lines the complete inward stroke of the blade holder during the grinding or honing operation.

Figure 4 is a similar view to Figures 2 and illustrating the position of parts when the blade holder is disposed at the full extent or" its inward stroke during the stropping operation.

Figure 5 is a longitudinal sectional view through the device with the parts in the posi tion illustrated in Figure 2, the figure being taken approximately on the line indicated at 5-5 in Figure 2.

approximately on the line 9-9 of Figure 5, il-

lustrating the shape of the split bearings in upstanding bearing brackets on the carriage.

Figures 10 and 11 are diagrammatic views illustrating the manner in which the blade edges coact respectively with the honing and stropping rollers.

While the accompanying drawings illustrate and the following specification describes a device which is especially designed for the purpose of sharpening double-edged safety razor blades, it is to beclearlyunderstood at the outset that the blade holder, which will be only broadly claimed, may be varied within the scope of the invention to receive single-edged safety razor blades, the

lades of old fashioned razors, as well as knives or other edged tools or implements, without in the least departing from the spirit or scope of the invention.

housing for the device, which includes a bottom 7 wall 15, and upstanding marginal side and end walls 16 and 17, while B designates the cover or top of the casing or housing, which consists of a top wall 18 and depending side and end marginal walls 19 and 20, which latter marginal walls are adapted to frictionally and telescopically fit over the upstanding marginal walls 16 and 1'7 of the casing or housing'body A. A pair of longitudinal shafts 21 and 22 are arrange within the casing in spaced parallel relation, and said shafts are journaled for rotation in any desired manner, while xed against axial movement. As illustrated, the shafts 21 and 22 are provided with reduced terminals or trunnions 23, which are journaled in bearing openings 24 formed respectively in the end walls 1? of the casing body section A. The shafts have each secured thereon for rotation therewith a grinding or honing roller 25 and a stropping roller 26 arranged in axially spaced relation, with the grinding rollers prefer ably disposed closely adjacent the marginal and wall 1'7 at the right-hand side of the drawings, and which end wall will be hereinafter referred to as the front end of the device. The stroppi'o a rollers 26 are spaced axially from the grind 1g rollers 25 and are disposed at a point appre mately intermediate the length of the casing or housing of the device. At this point, it may be noted that Within the scope or" the invention, a plurality of sets of pairs of rollers 25 having different degrees of fineness or coarseness of texture may be employed, and in event a plurality of sets of such grinding rollers is employed, they will be longitudinally or axially spaced on the shafts 21 and 22 with respect to each other and with respect to the stropping rollers. In order to provide means for imparting rotation or turning lllO-- tion to the shafts 21 and 22, that portion of each of said shafts which lies between the stropping rollers and what will be termed the rear end marginal walls 17 of the casing or housing arranged at the left-hand side of the drawings, is formed with a thread 27, preferably a multiple thread having a long pitch. The threaded portion 27 of each shaft may either constitute an integral part of the remainder of the shaft or may be a separate section secured or attached in any desired manner to remainder of the shaft. The means for imparting rotation to the shafts 21 and 22 further includes a block or cross which is provided with transversely spaced internally t readed aperture 29 corresponding to the threading or" the threaded portions 27 and designed to cooperate therewith upon reciprocations of the block or cross head between the stropping rollers and the rea or left-hand end marginal wall 17 of the casing or housing body A. The block or cross head 28 is formed with a depending guide lug 30 which rides and guided in a longitudinal transversely intermediate slot 31 extending throughout the length or" the bottom wall 15 the casing or housing body A. The slot 81 is covered by the downwardly depressed portion 82 of the bottom wall 1 which also may be in the form of a separate channel shaped pi ce attached to the 7 under side of the bottom wall 15 and which is pref -.rably of greater width than the width of the slot 31 and in which the flanges or side walls 33 thereof are joined to the underside of the bottom wall in spaced relation to the inner side edges 34 of the bottom wall defining the slot 3].. In order to provide means for reciprocating reciprocatory block or cross head 28, an

actuator shaft 35 is employed which extends:

longitudinally ofthe deviceand iS-jOll1'n&1df0l limited rocking or rotatory-movement'in a split bearing 36 formed in'the upstanding bearing bracket 37' of areoipmcatQrypIate or carriage 38 which is movedand guideddn the-channel defined by the depressed portion or cliannel member 32. The plate or carriage-38 is formed at its forward end with asecond upstanding bearing bracket 39 having a split bearing 40 disposed in axial alignment-with the'bearing 36, and a manipulating handle 41* is-attached to the plate or carriage 38 -at its forward end, preferably by means of'a hinge 42 which permits of the swinging of the handle' 'from the full line position illustrated'in Figure -5--to the'broken line position, where it underlies and is disposed parallel-to the under side of the bodyportion A of the casing or housingwhenthe deviceisnot inactive use. Thefree end 43 ofthe handle 41 is preferably increased-in width as illustrated, and is provided with longitudinallyextending depending resilient beads or flanges '44. at the marginal sideedges -thereof, whichbeads or flanges function when the handle is swung under the bottom wal1'15 to 'frictionally grip or clamp the outer surfaces of the flanges 33 to detachably retain the handle in its dotted line inactive position illustrated in'Figure' 5.

The opposite rear end of the actuator shaft 35 extends freely through an opening 45 and through atubular rearwardly projecting boss 46formed respectively in and on the block or cross head 28. A vertically shiftable bearing element 4'7 is arranged within a vertical guide recess 48 formed in the intermediate portion of the block or cross head 28, and the'bearing element 47 is formed with a lower end 49 of reduced width which is snuglyv received and guided by the reduced lower portion 50 of the guide recess 48. This defines shoulders 51 on the bearing element 47 and corresponding shoulders 52 within the guide recess :48 which are designed to coact with each other to limit'thedownward shifting movement or depressionof the bearing element 47 whenpressure is exerted on the'upper end of the bearing element which protrudes upwardly from'the guide recess 48. Aspring 53 is located within the' lower reduced portion 50 of the recess and functions to normally project the bearing element 4'7 upwardly andrto also tension the same against downward shifting movement. The bearing element is formed with akeyhole shaped slot including the circular portion 54 and thedownwardlyprojectlng rectangular portion 55 communicating withthe circular portion 54. The circular portion 54 is of a diameter approximating the diameter of the actuator shaft '35 to permit freemovement of the actuator shaft therethrough. Adjacent the opposite ends, the actuator shaft is formed with oppositely twisted or spiraled portions 56 and '57 which in cross section presenta rectangular configuration corresponding substantially to the size and shape of the rectangular portion 55 of the keyhole slot in the bearing element 47. The twisted or'spiraled portions56 and 57 each present or define respectively at their forwardand rear limits, shoulders 58 and 59, and 60 and 61. Theactuator shaft beyond its bearing point in the bearing 36 is formed with an extension 62,-either as an integral or separate part thereof, which extension'is provided at its outer free end with a head 63 having an annular or peripheral gl'OOVe64 journaled in-the split bearing :40. The extension 62 is'1n then'atln'e of-a half roundshaft sectionpresenting a flattened upper surface :65 having; longitudinallyspaced' upwardly projecting studs 66 and-67c'designed to protrude .;through the apertures or holes formed in the type .of safety razor blade C which has been illustrated, and which blade-isadapted to be laid iniflat contact with theupper flattenedsurface 65 of the extension 62. A suitable resilientclamping plate v68 is illustrated as attachedto the inner end of the extension 62 for longitudinal sliding movement,

and said clamping plateisiformed with aperrocking or rotatory motion of the actuator shaft 35. The innermost end or extremity of the actuator shaft which=protrudes beyond the boss 46 isformedwith a head 73, preferably in the'nature of a removable screw which is designed to assistin the retention of the actuator shaft against-outward axial movement to displace the same. It will be observed that the position of the circular portion 54 of the keyhole slot in the bearing element '47 is such that it will align with the actuator shaft when manuallydepressed until the shoulders 51 and 52 engage, and this willtherefore admit of axial or longitudinal shiftingmovement of the actuator no shaft 35'and its component parts with respect to the block or cross head 28, so that the said actuator shaft 35 may be coupled with the cross head28-at the longitudinally spaced points de- 'IDO fined'by the twisted or spiraled portions 56 and11 15 57. When either of said twisted or spiraled por- -tions56 and 57 is disposed relative to the hearing element 47, the spring 53 will function to shift the-bearing element 47 upwardly to cause the twisted or spiraled portion 56 or 57 to be31=20 engaged by and tocoact with the rectangular portion 55 0f the keyhole slot in the'bearing element. Y Obviously, when in this coacting relation, axial movement of the actuator shaft 35 actuator shaft until such time as the shoulders 58 and 59 or 60 and 61 impinge against one or the other of the faces of the bearing element 47. In ordercto prevent too free a rotation of the will effect a rotatory or rocking movement of theil shafts 21 and 22, brakes '74 are installed in the' 'casing or housing body A for'frictional contact with the shafts 21 and 22. Said brakes may be of any desired type to retard or exert a drag on the shafts when rotated.

In order to permit of the movement of the blade holding means to a point where it is disposed exteriorly of the housing or casing body and cover A and B, for the purpose of inserting awayor notched as at 75, while the front end wall 20 of the cover B is correspondingly cut away or notched as at76. In order to permitof theprojection of theactuator shaft during the operation of the device through the opposite rear end walls 17 and 20, the rear end wall 17 of the housing body A is formed with an opening 177, while the rear end wall 20 of the coveris cut away or notched as at 78. In order to gain access to the upper: end of fiche bearing plate 47 the blades in or removing the blades from the blade holding means, the front end wall 17 is cut for manually depressing or shifting the same when the cross head or block 28 is in either one of its extreme positions, the upper wall 18 of the cover is provided with cutaway portions or apertures 79 and 80.

In use and operation, with the parts in the position illustrated in Figures 2 and 5 of the .drawings, the blade holding means is disposed exteriorly of the casing or housing and is in a position to either permit of the removal of the blade from or the association of the blade with the blade holding means. After the blade has been properly associated with the blade holding means, the initial inward movement of the carriage 38 and the actuator shaft will through the interengagement of the twisted or spiraled portion 56 with the rectangular portion 55 of the keyhole slot in the bearing 4'7, impart a rotatory or rocking action of the actuator shaft ant blade holding extension 62, thereby swinging the edge D of the blade C into contact with the periphery of the roller 25 on the shaft 21 above its axis or shaft 21, while the opposite edge E of the blade C will be brought into contact with the periphery of the grinding or honing roller 25 on the shaft 22 below the axis or shaft 22 of said latter roller, as clearly illustrated in Figure 3 of the drawings. Continued inward longitudinal movement of the actuator shaft and carriage will cause the forward shoulder 58 of the twisted or spiraled portion 56 to impinge against the forward face of the bearing element 47 and will then effect movement of the block or cross head 28 from the position illustratedin Figures 2, 3 and 5 toward the left or rear end wall 17 the casing or housing body A until the cross head abuts the rear or left hand endwall i? of the casing. movement of the cross head will have through the interengagement of the threaded apertures 29 with the threaded portions 27 of the shafts 21 and 22, caused the shafts to have turned a third more than one complete rotation in the direction of the arrows indicated in Figure 3 of the drawings. Coincident with the rotation of the grinding or honing rollers against and toward the blade edges, it will be apparent that the blade is being moved longitudinally over the r ller peripheries, thereby in effect setting up a diagonal grinding or honing action precisely follo'. ing the proper honing or grind- 'ing action which it is so essential to obtain.-

viewed from the forward or right-hand end of the device. This swings the blade C so that the opposite face of the cutting edge Disbrought into contact with the periphery of the grinding or honing roller 25 on the shaft 221above its axis. or shaft 22, while the opposite cutting-edge E i brought into contact with the periphery of the grinding or honing roller25on the shaft 21 below the axis'or shaft 21.

portion 56 of the actuator shaft 35 into contact with the rear face of the bearing element 47, and continued outward movement will cause the block or cross head 28 to move with the actuator illustrated in Figure 4 of the drawings.

Obviously, continued. outward pull exerted on the handle will bring the rear shoulder 59 of the twisted or spiraled shaft until the cross head or block reaches the limit of its movement in this direction, where it contacts with the stropping rollers 26. This will have imparted turning movement of the grinding orhoning rollers 25in an opposite direction approximately a third more than a revolution, while the blade edges presented to the periphcries of the rollers 25 will have moved longitudinally across the grinding or honing rollers to impart in-eifect a diagonal grinding action thereto, as previously described. Continued reciprocations of the actuator shaft and its component parts will obviously repeat the operations thus described .until such time as the blade edges have been ground or honed to the desired extent, within'the judgment of the user or operator.

After the final grinding or honing treatment has been completed, the blade may be subjected to the action of the stropping or finishing rollers 26 without handling the blade or removing the same from the-blade holding means. This is accomplished in the following manner, namely:

therefore, the actuatorshaft is free to be moved L further inwardly or toward the left until the twisted orspiraled portion- 57 of the actuator shaft moves into juxtaposition to the keyhole slot. When the bearing element 47 is released and moves upwardly under the influence of the spring 53,7the forward shoulder 60 of the twisted or spiraled portion 57 will impinge against the forward surface of saidbearing element 47, and in this position the actuator shaft will be rocked together with the blade holding means and blade to dispose one surface of the cutting edge D of 'the blade C against the periphery of the stropping or finishing roller 26 on the shaft 22 above its axis or shaft, while one surface of the opposite cutting edge E will be brought into contact with the periphery of the stropping or finishing roller on the shaft 21 below its axis, as clearly The initial outward pulling movement which will then be exerted on the handle 41 will rock the blade to an obvious reverse position by virtue of the interengagement of the twisted or spiraled portion 57 with the rectangular portion 55 of the keyhole slot, and continued outward movement will'after the engagement of the rear shoulder 61 .of the spiraled or twisted portion 57 with the rear face of the bearing element 47, effect movement towardthe right of the block or cross head 28 to turn the finishing or stropping rollers in 'a' counter-clockwise direction, as illustrated-by the arrows in Figure 4 of the drawings. It vshould be noted at this point, to avoid confusion, that in Figure 4 the blade has not as yet been initially rocked to the position it will assume when turning motion has been imeffect, a diagonal stropping action isobtained "f precisely in accordance. with the facts and principles essential to a proper stropping operation. In other words, during the stropping operation, the rollers are turning away from the cutting edges of the blade, while during the grinding or honing operation, the grinding or honing rollers are turning toward the cutting edges .of the blade. The operation for imparting the stropping or finishing strokes is identical with the action and operation for imparting the grinding or honing strokes to the blade and, hence, it is not thought necessary to here repeat the description of the operation, as the operator merely continues to reciprocate the actuator shaft and its component parts through the medium of the handle 41 by pushing and pulling on the handle with one hand while holding the device steady in the other hand. After sufficient finishing or stropping strokes have been effected within the judgment of the user, the parts are brought to the position where the follower or cross head 28 is disposed at the right-hand end of its movement. This will position the bearing element 47 in registry or alignment with the opening in the top wall 18 of the casing or housing cover B, and in order to avoid the possibility of the stropped blade edges from contacting with the grinding or honing rollers during the withdrawal of the blade from the casing, the user or operator will move the actuator shaft slightly inward until the blade is in substantially a vertical plane. The operator will then depress the bearing element 47, permitting the actuator shaft to freely move longitudinally to the right through the circular portion 54 of the keyhole slot, thereby bringing the carriage and blade holding means substantially to the position illustrated in Figure 2, where the removal of the blade may be readily accomplished.

While the device has been shown and described in the form illustrated as particularly designed for double-edged safety razor blades, it is perfectly apparent that within the scope of the invention, the use of a blade holder of a different form will adapt the device for the purpose of treating single-edged safety'razor blades, the blades of old fashioned razors or other edged cutting implements or tools, without in any way affecting the general construction or principles of operation of the device. It should also be obvious that the number of sets or pairs of treating rollers or their arrangement or character may be varied without departing from the spirit or scope of the invention. It is here noted that no limitation isv intended as to the precise details of construction, as it is to be understood that variations and modifications which fall within the scope of the appended claims may be resorted to when found expedient.

What is claimed is:

'1. In a blade sharpening device of the character set forth, a casing, a pair of laterally spaced parallel shafts journaled within the casing for rotation, a blade sharpening roller secured to each shaft, a carriage mounted within the easing for guided longitudinal reciprocation relative to said rollers, a blade supporting means journaled in the carriage for lateral rocking movement with respect to said rollers, a member mounted within said casing for'guided longitudinal reciprocation, coacting screw means on said roller shafts'and said member for imparting rotatign to the roller shafts and rollers by reciprocation of said member and a connection between said carriage and said member for Bi.-

fecting reciprocation of the member by and with the carriage,-said means of connection permitting of limited relative initial movement between the carriage and member upon each change of direction and cooperating means 'on said member and the carriageand member connecting means operable to alternately dispose the opposite faces of the cutting edge of the blade carried by the'blade supporting means, in

contact with the peripheries of the sharpening rollers. V

2. In a blade sharpening device of the character set forth, a casing, a plurality of pairs of sharpening rollers mounted within the casing for rotation on laterally spaced parallel axes, the rollers of each pair presenting sharpening peripheries of relatively different characters, a blade supporting means mounted in the casing for longitudinal reciprocation relative to the sharpening rollers, said blade supporting means being also journaled for lateral rocking motion with respect to the sharpening rollers, a member mounted within the casing for guided longitudinal reciprocation, cooperating meansv of connection between the rollers and said member for imparting rotation to the rollers upon reciprocation of said member and means for selectively coupling the blade supporting means with said member at different longitudinally spaced points to dispose theblade in juxtaposition to the several pairs of rollers and for effecting reciprocation of the member 'by'and with the blade supporting means when arranged at said points to cause the same to be selectively acted upon by said sharpening rollers.

3. In a blade sharpening device of the character set forth, a casing, a plurality of sharpening 'rollersmounted in the casing on a common' axis and havingperipheries of relatively different characters, a blade supportingmeans mounted in the casing for guided longitudinal reciprocation relative to said rollers, a member mounted within the casing for guided longitudinal movement independent of the blade supporting means, cooperating means of connection between the rollers and said member for imparting rotation to the rollers upon longitudinal movement of said member with'respect to the rollers and means for seleotivelycoupling the blade supporting means to said member at longitudinally spaced points to dispose 'a bladecarried by the blade supporting means in juxtaposition to the several rollers for coaction therewith to sharpen the blade.

4. In a blade sharpening device of the character set fortlr, a casing, blade honing and stropping rollers, a common shaft extending longitudinally of the casing, journaled within the same for rotation and to which said rollers are secured in longitudinally spaced relation for rotation therewith, a blade support mounted in said casing for guided longitudinal movement relative to the rollers and roller shaft, a member mounted in the casing for limited longitudinal reciprocatory motion, coacting means in said member and the roller shaft for imparting rotation to the latter upon reciprocation of the former and means for selectively coupling the blade support to said member at longitudinally spaced points for disposing a blade supported thereby in juxtaposition to the honing and stropping rollers respectively.

5. In a blade sharpening-device of the character set forth, a casing, blade honing and stropping rollers, a common shaft extending longitudinally of the casing, journaled within the same for rotation and to which said rollers are secured in longitudinally spaced relation for rotation therewith, a blade support mounted in said casing for guided longitudinal movement relative to the rollers and roller shaft, a member mounted in the casing for limited longitudinal reciprocatory motion, coacting means in said member and the roller shaft for imparting rotation to the latter upon reci rocation of the former and manually controlled means for selectively coupling the blade support to said memher at longitudinally spaced points for disposing a blade supported thereby in juxtaposition to the honing and stropping rollers respectively.

6. In a blade supporting device of the character set forth, a casing, blade honing and stropping rollers, a common shaft extendinglongitudinally of the casing, journaled within the same for rotation and to which said rollers are secured in longitudinally spaced relation for rotation therewith, a blade support mounted in said casing for guided longitudinal movement relative to the rollers and roller shaft, a member mounted in the casing for limited longitudinal reciprocatory motion, coacting means in said member and the roller shaft for imparting rotation to the latter upon reciprocation of the former, means for selectively coupling the blade support to said member at longitudinally spaced points for disposing a blade supported thereby in juxtaposition to the honing and stropping rollers respectively and longitudinally spaced coacting means in said blade support engageable by said coupling means for permitting of an initial relative longitudinal movement between the blade support and said member at the beginning of each stroke for effecting the rocking of the blade support and the blade supported thereby to alternately present the opposite faces of the cutting edge of the blade to the periphery of the roller.

7. In a blade supporting device of the character set forth, a casing, blade honing and stropping rollers, a common shaft extending longitudinally of the casing, journaled within the same for rotation and to which said rollers are secured in longitudinally spaced relation for rotation therewith, a blade support mounted in said casing for guided longitudinal movement relative to the rollers and roller shaft, a member mounted in the casing for limited longitudinal reciprocatory motion, coacting means in said member and the roller shaft for imparting rotation to the latter upon reciprocation of the former, means for selectively coupling the blade support to said member at longitudinally spaced points for disposing a blade supported thereby in juxtaposition to the honing and stropping rollers respectively and longitudinally spaced coacting means in said blade support engageable by said coupling means for permitting of an initial relative longitudinal movement between the blade support and said member atthe beginning of each stroke for effecting the rocking of the blade support and the blade supported thereby to alternately present the opposite faces of the cutting edge of the blade to the periphery of the roller, the said longitudinally spaced coacting means on the said blade support respectively coacting with the coupling means to cause the cutting edge of a blade carried by the blade support to be presented to the honing roller so that the same turns toblade holder and member for permitting of an ward the edge while the stropping roller turns away from said edge.

- 1 8. In a blade sharpening device of the character set forth, a sharpening roller journaled for rotation, a blade support mounted for longitudinal movements relative to the roller, and journaled for rotatory motion with respect thereto, a member mounted for limited longitudinal reciprocatory motion, coacting means of connection between the roller and the member for imparting rotation to the former by reciprocation of the latter and coacting means on said blade holder and member for permitting of an initial relative longitudinal movement therebetween at the beginning of each stroke and for effecting the rocking of the blade support and a blade carried thereby to alternately present the opposite faces of the cutting edge to the sharpening roller.

9. In a blade sharpening device of the char- 9E acter set forth, a sharpening roller journaled for rotation, a blade support mounted for longitudinal movements relative to the roller, and journaled for rotatory motion with respect thereto, a member mounted for limited longitudinal reciprocatory motion, coacting means of connection between the roller and the member for imparting rotation to the former by reciprocation of the latter and coacting means on said initial relative longitudinal movement therebetween at the beginning of each stroke and for effecting the rocking of the blade support and a blade carried thereby to alternately present the opposite faces of the cutting edge to the sharpening roller while the periphery of the roller is moving in a predetermined direction with respect to said cutting edge.

10. In a blade sharpening device of the character set forth, a pair of sharpening rollers journaled for rotation on parallel axes, a blade support mounted for longitudinal movements relative to the rollers and journaled for rotatory motion with respect thereto, a member mounted for limited longitudinal reciprocatory motion with respect to said rollers, coacting means of connection between the rollers and said member for imparting rotation to the former in opposite directions upon reciprocation of the latter, and a connection between said blade holder and 1 5 member including coacting means for permitting of an initial relative longitudinal movement therebetween at the beginning of each stroke whereby to effect rotatory movement of the blade support and a blade carried thereby to 13 alternately present the opposite faces of the cutting edge of the blade to the sharpening roller.

11. In a blade sharpening device of the character set forth, a pair of sharpening rollers journaled for rotation on parallel axes, a blade support mounted for longitudinal movements relative to the rollers and journaled for rotatory motion with respect thereto, a member mounted for limited longitudinal reciprocatory motion with respect to said rollers, coacting means of connection between the rollers and said member for imparting rotation to the former in opposite directions upon reciprocation of the latter, and a connection between said blade holder and member including coacting means for permitting of an initial relative longitudinal movement therebetween at the beginning of each stroke whereby to effect rotatory movemgnt of the blade support and a blade carriedfthereby to alternately present the opposite faces of the cutting edge of the blade to the sharpening roller while the peripheries of the rollers are moving in a predetermined direction with respect to said blade cutting edge.

12. In a blade sharpening device of the character set forth, longitudinally spaced blade honing and stropping elements, a blade support, and means so constructed and arranged as to cause said elements and blade support selectively positionable relative to either of said elements to move relatively in two directions simultaneously the element drive being unidirectional and the blade oscillates for operative contact against and with the element to effect a diagonal treatment of the cutting edge of the blade by relative movement of said elements respectively toward the blade edge when honing and away from the blade edge when stropping and a connection between the elements and blade support for effecting said relative simultaneous movements therebetween upon direct manipulation of one of them.

13. In a blade sharpening device of the character set forth, longitudinally spaced blade honing and stropping elements, a blade support, said elements and blade support being relatively movable in two directions simultaneously to effect a diagonal treatment of the cutting edge of the blade carried by the support, a connection between the elements and blade support for effecting said relative simultaneous movements therebetween upon manipulation of one of them and means for selectively establishing said connection between the elements and blade support whereby to dispose the blade carried by the blade support in proper juxtaposition to the honing and stropping elements respectively for effecting relative movement between the blade and honing element directed toward the edge of the blade when honing and away from the blade edge when stropping.

14. A blade sharpening device of the character set forth including a pair of shafts journaled for rotation on spaced parallel axes, a sharpening roller secured to each shaft and turnable there with, a screw portion on each roller shaft, a blade holder mounted for longitudinal reciprocation with reference to said rollers, a shaft actuating member mounted for guided longitudinal movement with reference to the screw portions of the roller shafts, a connection between the blade holder and said member so constructed and arranged as to permit of limited initial relative longitudinal movement of the blade holder with respect to said member whereby to impart rocking movement to the blade holder upon each change of direction of the blade holder so as to alternately present to the peripheries of the rollers the opposite faces of the cutting edges of the blade, and cooperative screw portions of said member respectively engaging with the screw portions of the roller shafts to impart rotation to the rollers when the member is moved by and with the blade holder.

NICOLAY K. FOUGNER. 

